故(gu)事發生(sheng)在(zai)一(yi)(yi)個炎熱(re)的(de)(de)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)夏日,小鎮上的(de)(de)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)聲(sheng)(sheng)(sheng)不(bu)絕于耳(er)。女(nv)主(zhu)角小雅在(zai)樹蔭(yin)下聽著鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)聲(sheng)(sheng)(sheng),鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)回(hui)憶起與青梅竹馬(ma)的(de)(de)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)美好時光。突(tu)然,鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)她接到(dao)了一(yi)(yi)個神秘(mi)(mi)電話,鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)對(dui)方聲(sheng)(sheng)(sheng)稱(cheng)知道(dao)她心中的(de)(de)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)秘(mi)(mi)密。小雅心生(sheng)恐懼,鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)卻又不(bu)禁好奇(qi)。鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)她決定(ding)追尋這個謎團的(de)(de)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)真相,卻不(bu)料卷(juan)入了一(yi)(yi)場意想不(bu)到(dao)的(de)(de)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)陰(yin)謀之中。鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)聲(sheng)(sheng)(sheng)似乎(hu)在(zai)警示著她,鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)鳴(ming)(ming)(ming)蟬(chan)(chan)(chan)(chan)(chan)(chan)但(dan)一(yi)(yi)切已(yi)經無法挽回(hui)……